TrustFire TR-800 Flashlight going into strobe mode on its own?

[sacongo]

Hello i have a TrustFire TR-800 Flashlight the 5x cree version and after being on for a few minute on high it will start flashing but a low

power flash not as bright as strobe mode. Then if i go into other modes its bright so i dont think its low battery. I will put it back in high

mode again it will be at full power then start to flash again with in 10 sec. What could cause this?

 

[sacongo]

I bin doing some reading and think this mite be happening because of bad battery does anyone else with a TR-800 or TR-1200 had this happen to them.

 

[sacongo]

Fix it! thanks to HansV